Techniks part # 04240-7/8 The most accurate ER40 collet in the industry- average 0.0002" Total Indicated Runout (T.I.R.)! Clamping Range .836-.875inches Precision ground and hand inspected. Only the very best materials and grinding techniques used!

TECHNIKS 7/8" SUPER PRECISION ER40 COLLET .0002 ACCURACY CNC CHUCK MILL